<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>基本语法</title>
</head>
<body>


<h1>在页面内容之后，即&lt;/body&lt;标签之前引入js脚本</h1>

<script src="js1.js"></script>
</body>
</html>